[mpich-discuss] How to use myrinet in mpich2?

[Pavan Balaji]

There are two ways to do this.

1. If you want to use the default process manager (mpd), you'll need to
follow the instructions given in section 5.3.2 of the user guide
(http://www.mcs.anl.gov/research/projects/mpich2/documentation/files/mpich2-1.2-userguide.pdf).
Note that you'll also need to use the --ifhn option in the command line
for the localhost.

2. The second way is to use the Hydra process manager. In that case, you
can just give your myri0 IP addresses in your host file and use:

% mpiexec.hydra -f hostfile -n 100 ./foo

You can find some documentation on using the second method here:
http://wiki.mcs.anl.gov/mpich2/index.php/Using_the_Hydra_Process_Manager#Hydra_with_Non-Ethernet_Networks

 -- Pavan

On 10/16/2009 08:20 AM, Luís Miranda wrote:
> I'm sorry for the confusion, i have some difficulty on explaining myself
> in English, and i'm a newbie .... 
> I want to use MPICH2 ch3:nemesis (TCP) over the myri0 interface.
> I have installed the last version of mpich2 in my user space, because my
> program does't work with older versions.
> I didn't really understood yet  how i use myrinet. 
> 
> If you don't understand what i want, thanks anyway. 
> 
> Thanks
> 
> 2009/10/16 Scott Atchley <atchley at myri.com <mailto:atchley at myri.com>>
> 
>     Luís,
> 
>     Are you saying that you want to use MPICH2 ch3:nemesis (TCP) over
>     the myri0 interface?
> 
>     Or are you saying that you want to use MPICH2 ch3:nemesis:mx?
> 
>     Scott
> 
> 
>     On Oct 16, 2009, at 5:48 AM, Luís Miranda wrote:
> 
>         I want to user myrinet over tcp. The problem is, how do i choose
>         myrinet instead of ethernet? In my machine file i specifically
>         choose the myrinet interface. Is that enough?
> 
>         Thanks
> 
>         2009/6/24 Darius Buntinas <buntinas at mcs.anl.gov
>         <mailto:buntinas at mcs.anl.gov>>
> 
>         MPICH2 supports myrinet using either TCP or MX.  Using MX will
>         give you
>         the best performance.  The README file describes the additional
>         configure arguments you'll need to configure with MX.
> 
>         -d
> 
>         On 06/24/2009 11:26 AM, Luís Miranda wrote:
>         > How to use myrinet in mpich2? Do i have to compile
>         specifically to use
>         > myrinet?
>         >
>         >
>         > Thanks
> 
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-- 
Pavan Balaji
http://www.mcs.anl.gov/~balaji